function media_entity_twitter_preprocess_media_entity_twitter_tweet_thumbnail in Media entity Twitter 8.2
Same name and namespace in other branches
- 8 media_entity_twitter.module \media_entity_twitter_preprocess_media_entity_twitter_tweet_thumbnail()
Preprocess function for media_entity_twitter_tweet_thumbnail theme hook.
Parameters
array $variables: Variables to be injected into the template.
File
- ./
media_entity_twitter.module, line 32 - Hook implementations for media_entity_twitter module.
Code
function media_entity_twitter_preprocess_media_entity_twitter_tweet_thumbnail(array &$variables) {
// If the avatar exists, load it directly into memory and base64 encode it.
// For security reasons, browsers don't always allow external images xlinked
// in an SVG to be displayed when the SVG is being embedded via an <img> tag.
// The workaround is to embed the image directly into the SVG as a base64
// encoded string.
if ($variables['avatar']) {
$extension = pathinfo($variables['avatar'], PATHINFO_EXTENSION);
$extension = strtolower($extension);
// Don't fetch the avatar if it has an unrecognized extension.
if (in_array($extension, [
'gif',
'jpg',
'jpeg',
'png',
'webp',
])) {
$data = file_get_contents($variables['avatar']);
if ($data) {
// image/jpg is not a thing.
if ($extension == 'jpg') {
$extension = 'jpeg';
}
$variables['avatar'] = 'data:image/' . $extension . ';base64,' . base64_encode($data);
}
else {
unset($variables['avatar']);
}
}
else {
unset($variables['avatar']);
}
}
}